Shackleton, Ernest Henry, 1874-1922

Ernest Shackleton, leader of the Imperial Trans-Antarctic Expedition and part of two other Antarctic expeditions, acquired Polaris after her owner's financial trouble. Renamed Endurance after the Shackleton family motto Fortitudine vincimus (By Endurance we Conquer), she sailed intending to accomplish the first land crossing of the Antarctic continent. She departed for her final voyage on December 15, 1914 but progress was slow, averaging about 30 miles per day through pack ice. A month later, within 200 miles of their destination of Vahsel Bay, a gale developed with sightings of heavy pack ice. She took shelter for the next two days under a large grounded berg and made more progress on January 18 until encountering another ice pack, full of thick but soft ice floes, and was beset by the ice. By January 24, the Endurance was forced to float, waiting for the ice to open up, until crushed on October 27, 1915, and sinking a month later.

The crew attempted to call for help, but their location was too remote for the wireless. Although the ship had been capable of withstanding massive stresses caused by the heavy ice, on October 24, the starboard hull caught against a large ice floe and the hull bent and splintered until water poured in. Shackleton gave the order to abandon ship three days later. Shackleton's mission changed from a transcontinental journey to one of survival. Traveling by foot was nearly impossible, and Shackleton decided to await the break-up of the ice, attempting two marches which were abandoned because of difficulties. On April 8, 1916, the ice floe the crew had been living on split suddenly, and the crew and Shackleton readied the lifeboats for departure towards land. Moving slowly through ice packs, the lifeboats made it to Elephant Island in April. However, Elephant Island was uninhabited and rarely visited by other ships so Shackleton with five other men readied the lifeboat James Caird for the 800 mile journey to South Georgia for help. On May 10, the party reached South Georgia. On August 30, 1916, Shackelton's rescue mission reached the twenty-two members of his crew left behind; all survived after being at sea for nearly two years.